Gakuda

Highlight Mandarin Chinese (HSK) and English (CEFR) on any page: word card on click, YouTube and Netflix subtitles, OCR.

Gakuda is the official browser extension for Gakuda (gakuda.com), the language learning platform powered by spaced repetition (SRS). Turn any web page into an interactive learning experience for **English and Mandarin Chinese**. Discover vocabulary, understand unfamiliar words, and connect your reading directly to your learning progress, without leaving the page. FEATURES • Learn English and Mandarin Chinese directly from websites, articles, and online content • Smart vocabulary highlighting to help you recognise and review words you're learning • HSK-level colour coding for Mandarin Chinese vocabulary, consistent with Gakuda • Pinyin on hover for Chinese words, with assistance that gradually fades as your vocabulary improves • Click any recognised word to open its vocabulary card, view its meaning and learning details, and add it to your SRS or learning queue • A powerful side panel with four tabs: vocabulary detected on the page, searchable dictionary, text recognition, and video mode • Interactive YouTube and Netflix subtitles: click words to explore vocabulary and use Alt+R to replay the current subtitle line • Text recognition on images and video frames using Alt+Q, processed locally on your device • Convenient keyboard shortcuts: Alt+K to open the panel, Alt+H to toggle highlighting, Alt+Q for text recognition, and Alt+R to replay subtitles • Right-click menu for quick dictionary searches, opening the panel, and recognising text in images • Non-intrusive highlighting using the CSS Custom Highlight API, preserving the original website layout SYNCING WITH GAKUDA.COM The extension connects directly to your Gakuda account. Words added while browsing are automatically sent to your spaced repetition system, ready for review. Your existing learning progress is also synchronised, allowing the extension to distinguish familiar vocabulary from new words. Track your daily reviews, manage vocabulary, and continue learning seamlessly between Gakuda and your favourite websites. If you reach your daily learning limit, new words are added to your queue instead of being lost. PRIVACY Your privacy matters. • No browsing history is collected • The pages you visit and their contents are not sent to our servers • Vocabulary processing runs locally inside your browser • Dictionaries are downloaded for local use • Text recognition runs entirely on your device, without uploading images • Only the individual words you explicitly interact with are transmitted when necessary • Communication with Kotoba Interactive services is secured through HTTPS Privacy policy: https://gakuda.com/en/legal/extension-chrome REQUIREMENTS • Google Chrome 116 or later • Without an account: vocabulary highlighting and Chinese pinyin on hover • With a free Gakuda account: vocabulary cards, dictionary access, and review counters • With an active subscription or trial: add vocabulary directly to your SRS and learning queue Sign in directly from the extension using your email address and a six-digit verification code. LEARN LANGUAGES EVERYWHERE Whether you're reading English articles, exploring Mandarin Chinese websites, or watching videos, Gakuda helps turn everyday browsing into meaningful language practice. Learn naturally. Remember effectively. Progress every day. Official website: https://gakuda.com Contact: contact@kotobainteractive.com